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CCD Images - Session 62 (2004-03-19)

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Bullet Notes from CCD Session
 
Bullet M88 Spiral Galaxy
Bullet M99 Spiral Galaxy (Pinwheel Nebula)
Bullet NGC 4438 / NGC 4435 Galaxies (The Eyes | The Nonet)
Bullet NGC 4567 / 4568 Spiral Galaxies (The Siamese Twins)
Bullet Attempt at imaging 2004 DW (Kuiper Belt Object)

Notes (S00062)

Imaging session was with focal reducer bringing 8" f/10 LX200 to f/7. Images were recorded with ST7 CCD camera & CFW8 Colour Filter Wheel. Seeing was fairly poor with 'murky' atmosphere close to the horizon, hindering attempts at imaging the 'new' Kuiper Belt object 2004 DW.. Seeing gradually deteriorated through the session.

Despite the conditions, images were successfully obtained of a number of brighter galaxies in Coma Berenices and Virgo constellations. 5 minute exposures were taken with ST7 self guided using available (but faint) offset stars. Some images couldn't be used because thin cloud caused guide stars to 'lost' to the autoguider. Colour filters not used due to poor condition.

Negative images of the galaxies imaged are shown below.

M88 
NGC 4438 / NGC 4435
(The Eyes)
Image  Image
M99
(Pinwheel Nebula)
NGC 4567/NGC 4568
(Siamese Twins)
Image Image

 

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M88 Spiral Galaxy

M88 (Coma Berenices)
Image 
CCD Image, 5 min exposure 
 clear filter
2004-03-19 23:23 h UT (#62049)

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M99 Spiral Galaxy (Pinwheel Nebula)

M99 (Coma Berenices)
Image 
CCD Image
3 x 5 min exposure (average combine), 2x2 binning, Clear filter
2004-03-19   23:55h UT (#62052-54)

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NGC 4438 / NGC 4435 Galaxies (The Eyes | The Nonet)

NGC 4438 (bottom) & NGC 4435 (top)
 (Virgo)
Image 
CCD Image,  5 min exposure 
2004-03-19  23:05h UT (#62046)
 
ARP 120 - detail
Image 
CCD Image
Square root scale
Image details as above

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NGC 4567 / 4568 Spiral Galaxies (The Siamese Twins)

NGC 4567 (top) & NGC 4568 (bottom)
 (Virgo)
Image 
CCD Image,  5 min exposure 
2004-03-19  23:30h UT (#62038)

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Attempt at imaging 2004 DW (Kuiper Belt Object)

Star Field in Hydra with the predicted position of 
2004 DW marked by green circle. 
Image 
CCD Image, 2 x 5 min exposure (summed)
 clear filter
2004-03-19 22:05 h UT (#62030-31)
 
Comparison of star field image to that recorded 48 hours previously.
The predicted positions of 2004 DW are marked by a green circle. 
The Kuiper Belt object 2004 DW is not visible in either image due to 
the object's very faint magnitude and less than perfect seeing
Image Image
2004-03-17
(10 x 5 min)
2004-03-19
(2 x 5 min)

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This Web Page: CCD Images - Session 62 (2004-03-19)
Last Updated : 2015-05-16
Site Owner : David Richards
Home Page : David's Astronomy Web Site